Make it easy to keep these questions in your mind by printing out and carrying the Checkout Checklist business card size in your wallet.
Some say, it was the side-by-side placement on the printing press, some say the pockets in the wallets were the limiting factor, there is some limited indication that the card size was to match the pocket tobacco box to which these cards were held with a rubber band.
FORBES: How Was The Standard Size Of A Credit Card Or A Business Card Established?
That is why, to date, Web video has been confined to jerky images in credit-card-size windows on the PC.
Even though the sample card was half of the size of an actual Social Security card, was written in red, and had Specimen written in bold (see above), many people mistakenly thought it was their own Social Security number.
To save all those big pictures, it comes with a full size MMC card slot, but we bet it's under the battery.
The same thing that makes them convenient: the card's physical size.
The left side of the slate houses a headphone jack, micro-HDMI connection, micro-USB 2.0 and a full-size SD card slot that lets you add up to 128GB of external storage (and theoretically more).
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There's a full-size SD card reader and a standard 3.5mm headphone jack (with mic support) on the left, plus the power input, HDMI output, USB 2.0 port, USB 3.0 connector and SIM slot (currently unused) in back.
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Others, like the Nomad II from Creative Labs (nasdaq: CREAF - news - people), use the SmartMedia card, which holds up to 64 MB and is about the size of a credit card cut in half.
Other possible changes include curbing the number of debit-card transactions customers can make each month and restricting the size of a transaction with a debit card.
What this does is expand the installed image to use the maximum available size of your SD card.
It will be designed to cater for each individual's communication needs and abilities and is the size of a credit card.
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At a third of the size of a normal card, it can be discreetly and simply stuck to the back of any mobile phone.
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LUMOback is an 8.5mm thick appliance roughly the size of a credit card that's worn like a belt and rests against your lower back.
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The Raspberry Pi is about the size of a credit card but is a fully working computer created to help young people get started with programming.
However, the developers hope to reduce its footprint even further, to about the size of a credit card, which could see it pop up in even more places.
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The GenVault plate, the size of an index card and slightly thicker, contains 384 tiny wells, each lined on the bottom with special paper and prefilled with a strand of synthetic rice DNA, varying in length and sequence.
The optional dock offers the same features it always has, but for any first-time Transformer buyers who might be reading this, here's a quick primer: in addition to being an external keyboard, the dock is home to an SD card slot, a full-size USB 2.0 port and a built-in 19.5Wh battery, allowing you to go longer without charging your tablet.
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In the past we've seen a tongue-based computer interface or two, the BrainPort sight-via-papillae solution, and this week, at the American Chemical Society's annual meeting, researchers from the University of Illinois at Urbana-Champaign introduced a sensor about the size of a business card that detects and identifies fourteen common sweeteners -- including Splenda, Sugar in the Raw, and Sweet'n'Low.
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To help users get started, every system comes with a 2GB SD memory card (though owners can provide whatever size they like).
Not much information is available as to how they were reduced to the size of the current business card, though there are many educated guesses.
FORBES: How Was The Standard Size Of A Credit Card Or A Business Card Established?
There's also an FM tuner, integrated digital voice recorder, a microSD memory card slot that can handle microSDHC cards up to 8GB in size, support for playback of MP3, WMA, and WAV audio files, and enough battery life for playback of at least 30 hours of audio and 6 hours of video.
The full-size USB port provides connectivity to existing equipment and SD card reader enables easy file transfer plus back-up when Internet access is not feasible.
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Once you unlock your phone you can insert almost any SIM card you want (the iPhone3 and 4 series take a different size SIM so be careful), foreign or domestic, prepaid or not.
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The cryptographic token, in development for a year at MIT's Center for Bits and Atoms, is the size of a postage stamp and as thick as a credit card.
Grace Flint has a microphone the size of a shirt button, connected to a transmitter as thin as a credit card, that will relay any foolish admissions you might make to her from around the corner, or across the city, or from just about any place on earth.
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